One thing to add as you get into this. Any of the wood that is still wet must be totally dried out before closing it back up. If is also a good idea to use a product called Rot Dr.
Wood preservation, rot repair, and restoration using epoxy resin on boats and homes.
I used it when I fixed my rotted slide floor
It will kill and seal out any fungus from starting dry rot later to show up. Also heads up to buy the respirator they sell. The fumes will take you out.... with the respirator, no problem and 3 days later a well aired out camper will not have any smell left.
Good luck and looking forward to the progress pics.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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